Narrow ware loom shuttle



y 5, 1958 L. o. WATERHOUSE 2,843,158

NARROW WARE LOOM SHUTTLE Filed July 17, 1956 QIEII i:

m v U 0 H R m A 0 B W E L 86 I 5 4 2 2 4 5 H a V 3 3 H I ATTORNEY UnitedStates Patent 2,843,158 NARROW WARE LOQM SHUTTLE Lewis 0. Waterhouse,Oxford, Mass., assignor to Crompton Knowles Corporation, Worcester,Mass, a corporatlon of Massachusetts Application July 17, 1956, SerialNo. 598,413 11 Claims. (Cl. 139199) I removed and have substitutedtherefor another similar' unit having a quill of different size whilestill retaining the same shuttle body or runner unit.

Shuttles for narrow ware looms are usually made from a single block ofwood requiring .several expensive wood-working operations to obtain theproper shape. The exterior of the shuttle must be highly polished so asnot to injure or break the warp threads between which it passes. Also,the bow of the shuttle; is made of such thickness for strength purposesthat the. quill used is necessarily short. Moreover, it has beennecessary in the past to provide the shuttle with a warp spreader Wireto prevent contact of the bow of the shuttle with the warp threads whilethe shuttle is entering or leaving the warp shed. It can readily beappreciated that the above described shuttle requires much attention andcare in its manufacture.

It is an important object of the invention to provide a shuttleconsisting of runner, bow and spreader units, these units being easilymanufacturable, separable, simple and inexpensive in their construction,and capable of ready assembly.

Another object of the invention is to eliminate the need of highlypolishing the entire shuttle by making the third unit which spreads thewarp with only'a small exterior surface in need of polishing and ofaconfiguration greater than that of the remaining units, this third unitbeing preferably the only unit contacting the warp threads while theshuttlepasses between them.

Still another object of the invention is to make the bow unit of acomparatively small diametertube bent U-shaped to have legs which can beinserted into the runner unit adjacent its ends, thereby definingalarger quill opening or chamber than is posible with the ordifi narynarrow ware shuttle.

A specific object of the invention is to make the' bow Further, anotherobject of the invention is to provide the shuttle with a single lockmeans unit mounted on the runner unit and effective to firmly lock thetubular bow unit to the runner unit andv also effective to'contact thewarp thread while weaving to spread them in ansup and down direction toprevent contact of the quill and the tubular bow and runner units withthe warp threads.

Other objects of the invention will appear hereinafter, and for afurther understanding of the invention I is of less width than thediameter of member 21. Areas:

Patented July 15-, 1958 reference is made to the accompanying drawingswhich illustrate by way of examples two embodiments of the invention andin which:

Fig. 1 is a plan view of a shuttle showing the preferred form of theinvention,

Fig. 2 is a front elevation of the shuttle looking in the direction ofarrow 2, Fig. l, A

Fig. 3 is an end elevation of the shuttle looking in the direction ofarrow 3, Fig. 1, and includes a sectional portion of the usual shuttleblock with the shuttle driv-- ing pinion thereon,

Fig. 4 is a horizontal section on line 44, Fig. 2, Figs. 5, 6, 7 and 8are detailed vertical sections taken respectively on lines 5-5, 66, 77,and 8-8 of Fig. 4,

Fig. 9 is a detailed vertical section taken on line 99, Fig. 7,

Fig. 10 is a detailed vertical section on line 1010, Fig. 4,.

Figs. 11 and 12 are views in cross section similar to a portion of Fig.3 illustrating the manner in which the aforementioned units are lockedtogether, and

Fig. 13 is a view similar to a portion of Fig. 3 but Showing amodification of the invention.

With reference to the drawings, the shuttle is generally indicated at 1and has a runner unit generally indicated at 2 having a body or .base 3with the usual guide groove 4 and gear rack 5 to cooperate respectivelywith the usual shuttle block 6 and pinion 7, see Fig. 3, to reciprocatethe shuttle during weaving between top and bottom sheets WT and WBrespectively of warp-threads, see Fig. 3. Detachably mounted on the base3 is a substantially U-shaped tubular bow unit generally indicated at 8.Also detachably mounted on the base 3,is a single lock means unitgenerally indicated at 9 to coact with the bow unit 8 to lock the latterto the base 3.

As shown in the drawing the bow unit 8 comprises a light-weight tubularbody-11 having right and left legs 12 and 13 respectively, see Figs. 1and 4, joined integrally with an arch or shuttle nose 14 to form agenerally U-shaped bow. Collars 15 and 16 are held fast to the leg 12 bypins 17 and .18;respectively and are spaced from each other along theleg 12 to receive snugly be tween them the loop 19 of asupport member 21on which the quill 22 is rotatably mounted. The loop 19 surrounds theleg 12 and. has pivotal relationship therewith.

The left-hand end 23 of member 21, Fig. 4, fits into a key slot 24 in acollar orsocket member 25 fixed to the leg 13 by a pin 26. Slot'24, hasan enlarged end 26 connected by a reduced neck 27 to a semi-circularsocket 28 to receive the end 23 of member 21. The neck'27 31 and 32 oncollar 25 adjacent to neck 27'act to positively confine the end 23 tocollar 25. To remove the quill 22 it is merely necessary to applypressure to its left underside, Fig. 1, thereby forcing the end 23 upw,wardly, Fig. 9, through neck 27 to spread areas 31 and 32 apart.Continued upward movement of the quill 22 moves end 23 outof enlargedend- 26. of slot 24 and away from collar 25 due to pivoting of loop 19around' leg 12. Conversely, it is only necessary to reverse theprocedure outlined above to lock a quill to the shuttle] Collars 15, 16and 25 are preferably made of nylon but this is not essential to theinvention, although some in-, herent resilience of collar 25 isdesirable.

Nose 14 is made with two holes 33 and '34 to receive respectively legs35 and 36 of a support wire 37 having -'slidably mounted thereon asliding guide eyelet 38 to receive the filling threadF. Legs 35 and 36,haveibent end portions 39 and 41 respectively to hold wire 37 to thenose 14. Wire 37 is made of spring material and in 3 end portions 39 and41 with holes 33 and 34, after which the wire 37 can be removed, or thelegs 35 and 36 released, as the case may be.

The filling thread F passes from the quill 22 through guide eyelet 38,thence through eyelets 42 and 43, and then out through eye-bushing 44 tothe selvage of the fabric (not shown). Eyelet 42 is attached to one endof a tension spring 45 which passes through a hole 46 in tubular body11. Spring 45' is located inside leg 12 and its other end is anchored topin 47 fixed to leg 12 adjacent the end of the latter, see Fig. 4. Also,eyelet 43 has a tension spring 48 attached thereto which passes througha hole 49- in tubular body '11. located inside of leg 13 and its end isanchored to pin 51 similar to pin 47 fixed to leg 13. Formed integrallywith legs 12 and 13 are guide lips'52' and 53 for springs 45 and 48,respectively. These lips are curved toward each other in a manner toguide the springs into and out of legs 12 and 13. Eyelets 42 and 43 arelarger than holes 46 and 49 respectively to prevent contraction ofsprings 45 and 48 into legs 12 and 13 respectively.

Runner unit 2 has right and left-hand holes 54 and 55 respectively toreceive a substantial part of legs 12 and 13 respectively, see Fig. 4.Held on runner base 3 by screws 56 and 57 is the single lock means orspreader unit 9 having a relatively thin, flat body member 58. Member 58has an upper edge surface 59 and a lower edge surface 61, these surfacesbeing substantially parallel to each other. Surfaces 59 and 61 haveextending from their right-hand ends thereof, Fig. 2, converging surfaceportions 62 and 63, and from their lefthand ends similar surfaceportions 64 and 65 respectively. These converging surfaces form thepointed end portions 65 and 66 of the base member 3.

Member 58 has a pair of holes 67 and 68 through which the legs 12 and 13respectively pass. Countersunk holes 69 and 71 in member 58 receive thescrews 56 and 57 respectively which enter pilot holes 72 and 73respectively in runner 3. A central aperture 74 in member 58, Fig. 4,has passing therethrough the usual drag brake 75 and spring 76 thereforattached in the usual manner to the runner unit'2.

As seen in Fig. 11 the axis a of pilot hole 72 is slightly below theaxis b of countersunk hole 69 such that holes 69 and 72 are slightlymisaligned. Likewise the pilot hole 73 and the countersunk hole 71 arealso slightly misaligned. With the parts loosely assembled as viewed in'Fig. 11 the screw 56 will enter holes 69 and 72 angularly with respectto member 58 and runner base 3 and will be forced downwardly due tomisalignment of holes 69 and 72. Continued insertion of the screw 56will force member 58 downwardly and to the left, Fig. 12, such that hole67 will clamp or pinch the leg 12 and hold the latter in fixedrelationship to the runner base 3. In similar maner leg 13 will beclamped to runner base 3. Upon completion of insertion of screws 56 and57 all three of the units 2, 8 and 9 will be simply yet effectivelylocked with respect to each other, as viewed in Fig. 3.

In the modified form, Fig. 13, a runner unit 80, a lock unit 81 and atubular bow unit 82 are similar to the corresponding parts of thepreferred form of the invention. Unit 80, however, has along the entirelength of its lower part a surface 83 slightly oblique with respect tosurface 84 on unit 80. Countersunk hole 85 in unit 81 andv pilot hole 86in unit 80 are normal to surface 83. Screw 87 holds unit 81 detachablymounted on unit 80. When screw 87 is tightened surface 83 will causeunit 81 to tilt, whereby hole 88 in the lock unit 81 will clamp or pinchtubular body unit 82 to hold the latter in locked relationship withrespect to runner. unit 80. The arrangement shown in Fig. 13 can be usedat each end. of the runner unit 80.

From the foregoing-description it is fseen that the invention provides ashuttle having units 2, 8 and9com- Spring 48 is plete in themselveswherein unit 9 is secured to unit 2 in such a manner as to hold allthree units effectively in locked relationship with each other. Toremove the bow unit 8 it is only necessary to loosen screws 56 and 57from the full to the dotted line position and move unit 8 to the leftfrom the full to the dotted line position, see Fig. 3. Unit 8 may beremoved while the runner 3 is either on or off the shuttle block 6.Moreover, any unit may be changed with respect to the remaining units bycomplete removal of the screws 56 and 57. Unit 8 pivotally supportsquill pin member 21 which can be also positively locked thereto. Tensionsprings 45 and 48 are guided into body 11 of unit 8 and upon removal ofthe quill 22 said springs contract into legs 12 and 13 but cannot fallloose due to the connections at each end of the springs. Guide lips 52and 53 are made in such manner as to eliminate sharp corners to prevententanglement or catching of the springs on the tube 11; Wire 37 issupported on arch 14 and because of its inherent resiliency and theparticular manner in which it is supported it is free to pivotrelatively to the arch to find a position best suited for supporting theguide eyelet 38.

It is apparent that certain changes may be made without departing fromthe spirit and scope of the invention, and having fully described andascertained the nature of the invention, what is claimed is:

1. In a narrow ware shuttle, an elongated runner unit having provisionfor support on a shuttle block and having two parallel holes therein,one near each end of the runner, a U-shaped bow unit for support of aweft supply having the opposite parallel sides thereof inserted intosaid holes in the runner unit, a bow holding and warp spreader unithaving holes therein through which said parallel sides pass, and meansextending through the spreader unit into the runner unit securing thespreader unit to the runner unit and forcing the spreader unit againstsaid parallel sides to hold the bow unit in fixed position on the runnerunit.

2. The shuttle set forth in claim 1 wherein said means is removable toenable the holes in the spreader unit to align withthe adjacent holes inthe runner unit, whereby the bow unit can be removed from the runnerunit.

3. The shuttle set forth in claim 1 wherein the runner unit has asurface oblique to the sides of said bow unit andsaid means causes thespreader unit to lie against said oblique surface.

4. The shuttle set forth in claim 1 wherein the spreader unit hasopenings therein and said means are screws passing through said openingsinto pilot holes in the runner unit at a distance from the adjacent sideof the bow unit different from that of the corresponding opening in thespreader unit.

5-. The shuttle set forth in claim 4 wherein the openings in thespreaderunit are countersunk to receive complementarilyshaped heads onthe screws, the screw heads by their engagement with said openingsforcing. the spreaderunit laterally relative to the bow unit when thescrews are tightened into the runner 'unit.

6. The shuttle set forth in claim 1 wherein a brake for aweft supplyon-the bow unit is pivoted on the runner unit and extends through acentral aperture in the spreader unit and the means are removable toenable the bow and spreader units to be removed from the runner unitwhile the-brake is-pivoted on the latter unit.

7. In a bow unit for a narrow ware shuttle having a runner unit, said'bow unit including a one-piece tube bent U-shaped having an arch andparallel legs adapted for connection with'the runner unit, a quill pinhaving an eye on one end thereof encircling and pivoted on one of saidlegs, means on said one leg preventing said eye from moving. therealong,and a socket member fixed on the other leg having. a slot to receive andhave a close fit with the otherend of said quill pin.

8. The unit set forth in. claim'7 wherein the socket 5 member is made ofresilient material and the slot has a reduced neck of less width thanthe thickness of the pin, said slot beyond the neck being wider than thelatter to receive said other end of the pin after it has been forcedthrough said neck.

9. In a bow unit for a narrow ware shuttle having a runner unit, saidbow unit including a one-piece tube bent U-shaped having an arch andparallel legs adapted for connection with the runner unit, a tensionspring anchored to the end of each leg remote from the arch andextending to and extensible through an opening in the leg, a weft guideeye secured to each spring held normally against the leg therefor by itsspring, each of said legs having an opening therein for thecorresponding spring facing the other leg, and a lip for each openingintegral with the corresponding leg along which the associated springslides when extended toward the other leg.

10. In a bow unit for a narrow ware shuttle having a runner unit, saidbow unit having a weft guide eye thereon and including a one-piece tubebent U-shaped having an arch and parallel legs adapted for connectionwith the runner unit, and a support for said eye comprising a resilientwire having a part along which the eye can slide and a leg at each endof said part having a bent end portion extending through a hole in saidarch and into the latter to be held against accidental removal byengagement of said bent ends with the interior of the tube, said legsdue to their resilience being bendable toward each other to cause saidbent ends to register with their respective openings for easy removal orinsertion of the support from the arch.

11. The unit set forth in claim 10 wherein said bent ends and holes inthe arch permit a limited angular movement of the legs and said part ofthe wire relative to the plane of said tube.

References Cited in the file of this patent UNITED STATES PATENTS1,737,138 Baader Nov. 26, 1929 2,470,981 Hardick May 24, 1949 FOREIGNPATENTS 101,825 Germany May 19, 1898 217,182 Germany Apr. 10, 1908

